ASTROSAT CZTI

Data Quality Report

Orbit 25684

Creation date: 2024-06-27T19:20:23.067874
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A09_043T01_9000003744_25684cztM0_level2.evt modeM0/AS1A09_043T01_9000003744_25684cztM0_level2_quad_clean.evt
Size (bytes)600,923,52090,864,000
Size573.1 MB 86.7 MB
Events in quadrant A4,528,921566,664
Events in quadrant B3,767,379577,687
Events in quadrant C3,725,510545,537
Events in quadrant D5,654,322525,166

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0178910
B0159400
C0158470
D0217560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77073114.035293%
B77071842.387440%
C77072032.633969%
D77073534.580252%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 8042 7707 68 68 0.85% 0.88%
B 8042 7708 2 2 0.02% 0.03%
C 8042 7707 0 0 0.00% 0.00%
D 8042 7708 352 352 4.38% 4.57%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 0 13 502040 2638.49 945 924 189.9
A 8 192 378386 1987.42 945 924 189.9
A 13 254 10706 51.5 945 924 189.9
B 0 245 24153 126.26 948 923 184.0
B 12 111 23028 120.15 948 923 184.0
B 11 111 20779 107.92 948 923 184.0
C 14 238 146668 677.47 913 916 215.1
C 3 233 17341 76.34 913 916 215.1
C 13 61 6256 24.82 913 916 215.1
D 1 52 1738636 7721.57 919 889 225.1
D 8 195 269389 1193.06 919 889 225.1
D 13 104 88491 389.25 919 889 225.1

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter